Good evening, I urgently need a Navi and have found a few nice candidates there, which are certainly great to use as a stand-only solution. However, I would like to use more than just the actual Navi software as an Iphone user. Therefore the following questions: 1. Can each Navi be connected to the HP radio invisibly, so that the music goes quiet when something is announced, and so that the announcements come over the normal speakers? 2. Since I would have my Iphone connected to the Navi Bluetooth over it. 2.1. Can I then run the conversation also over the normal speakers? 2.2. Can I then let the music on the connected Iphone play via the Navi, on the radio? A few helpful answers would be great. Thank you so much,